| Acronym | Meaning |
| MR-SAC | Multireference Symmetry-adapted-cluster (quantum Theory Or Wave Function For Mol. Calcns.) |
| VEO | Valence Electron Only |
| GWD | Gaussian Wave Packet Dynamics |
| CERCLIS | Comprehensive Environmental Response |
| STCA | Simplified Traveling-cluster Approxn. (for Electronic Structure) |
| PQCD | Perturbative Quantum Chromodynamics |
| LCR | Ligase Chain Reaction |
| VMS | Volcanogenic Massive Sulfide |
| PI | Polydispersity Index |
| JME | Juvenile Myoclonic Epilepsypar |